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Integumentary 1 - Midterm > Connective Tissue & Fascia - Class 1 > Flashcards

Connective Tissue & Fascia - Class 1 Flashcards

1
Q

where is CT seen

A

throughout the body

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2
Q

fxns of CT

A

supports organs and cells

transports nutrients and waste

defends against pathogens

stores fat

repairs damaged tissues

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3
Q

4 types of tissues in body

A

muscle

nerve

epithelium

connective tissue

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4
Q

muscle

A

contractile tissue

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5
Q

nerve

A

electrical activity

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6
Q

epithelium

A

covers internal and external surfaces

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7
Q

CT

A

provides structure and functional support

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8
Q

how much of body weight does CT make up

A

approx 30%

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9
Q

fluid of bone + dense connective tissue contain approx…

A

15% of the total body water

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10
Q

4 types of CT

A

connective tissue proper

cartilage

bone

blood

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11
Q

connective tissue is

A

3 dimensional tissue with

extracellular matrix & cells

cells that manufacture and support CT

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12
Q

extracellular matrix

A

stuff outside of the cells

gelatinous base - ground substance (GAGs, proteoglycans, glycoproteins and water)

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13
Q

what is the extracellular matric reinforced by

A

connective tissue fibers

-collagen, elastin, reticulin

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14
Q

what is the extracellular matric made up of

A

ground substance

CT fibers

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15
Q

ground substance is made up of

A

visco-elastic gel

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16
Q

griound substance composition

A

glycosaminoglycans (GAGs)

H2O

proteoglycans and glycoproteins

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17
Q

GAGs

A

binds water to ground substance

can hold nearly 1000x their weight –> help provide moisture to skin

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18
Q

extracellular matric fxn

A

nutrition to CT

fluid which provides…

barrier against infection

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19
Q

fluid which provides… –> extracellular matric fxn

A

critical fiber distance b/w fibers

mobility of connective tissue

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20
Q

CT fibers

A

collagen

elastin

reticular fibers

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21
Q

collagen

A

4 types

toughest, strongest fiber of CT

tropocollagen

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22
Q

4 types of collagen

A

Type 1 - 4

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23
Q

type 1 collagen

A

loose and dense CT

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24
Q

type 2 collagen

A

hyaline cartilage

flexibility and support

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25
Q

type 3 collagen

A

lining of arteries and organs

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26
Q

type 4 collagen

A

basement membrane

mechanical stability

cellular adhesion and survival

27
Q

tropocollagen

A

basic unit of collagen

28
Q

elastin

A

has the most extensibility

less strength than collagen/more than reticulin

29
Q

where is elastin found

A

skin

lungs

heart

tendons

ligaments

artery linings

ligamentum flavum

30
Q

reticulin

A

fine fibers with least strength

supports internal organs

31
Q

connective tissue cells

A

fibroblasts

fibrocytes

macrophages

mast cells

plasma cells

32
Q

fibroblasts

A

contributes to formation of CT

synthesizes collagen

33
Q

fibrocytes

A

mature fibroblasts

34
Q

macrophages

A

assist in healing

35
Q

mast cells

A

part of immune system

release histamine

36
Q

plasma cells

A

antibody for infection

37
Q

connective tissue proper

A

named according to fiber concentration/arrangement

38
Q

types of connective tissue proper

A

dense regular

dense irregular

loose irregluar

39
Q

dense regular is also called

A

fibrous CT

40
Q

dense regular CT

A

high concentration of fibers

arranged in a regular pattern

41
Q

dense regular CT has

A

high concentration of collagen

high tensile strength in one direction

42
Q

where is dense regular CT found

A

tendons and ligs

blood vessel walls

43
Q

what does regular CT do

A

supports, protects and holds bones, mm and other tissues and organs in place

44
Q

dense irregular CT

A

high conc of fibers/arranged in haphazard fashion

45
Q

dense irregular CT has

A

high conc of collagen

with standard forces in various directions

46
Q

where is dense irregular CT found

A

dermal layer of skin and aponeuroses

47
Q

loose irregular connective tissue

A

low conc of fibers arranged in haphazard fashion

48
Q

loose irregular CT has

A

less tensile strength

contains finer elastin fibers and thicker collagen fibers

49
Q

loose irregular CT resists

A

forces in various directions

50
Q

ex of loose irregular connective tissue

A

a lymph gland and hypodermis

51
Q

where is loose irregular tissue found

A

directly beneath the epidermis/papillary layer of the dermis

52
Q

fxn of CT (2)

A

diffusion of nutrients

barrier against trauma and infection

allows body to move

“critical fiber distance”

53
Q

allows body to move

A

H2O allows tissue to slide on each other

54
Q

“critical fiber distance”

A

fluid creates distance b/w fibers so they dont create adhesions within the CT

55
Q

visco-elastic

A

viscous and elastic

56
Q

viscous

A

gel like so can be stretched

57
Q

elastic

A

tends to return to previous length

58
Q

stretching of connective tissue

A

as tension increases, collagen fibers arrange in the direction of the tension

59
Q

fascia

A

CT envelope that supports the body and gives it shape

60
Q

what is fascia

A

thin casing of CT

61
Q

where is fascia located

A

under the skin and in deeper locations throughout the body

62
Q

what does fascia do

A

holds everything in place

63
Q

what does fascia contain

A

nerves

make it almost as sensitive as the skin

64
Q

what happens when fascia undergoes mechanican stress

A

“tighten up”

Integumentary 1 - Midterm (23 decks)

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